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Preparation method and application of asphalt modifier for roads

An asphalt modifier and road technology, applied in building components, building insulation materials, buildings, etc., can solve problems such as the inability to form a network structure, the compatibility of rubber powder and asphalt, etc. Social and economic benefits, stable and reliable quality

Inactive Publication Date: 2014-12-03
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the main reason restricting the development of rubber powder modified asphalt is the compatibility of rubber powder and asphalt
Although the rubber powder will be combined with the asphalt by absorbing the light components in the asphalt during the process of modifying asphalt with rubber powder, the rubber powder is still dispersed in the asphalt system as tiny particles during the process of modifying asphalt, and cannot form a network structure , the formed modified asphalt belongs to the heterogeneous system

Method used

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  • Preparation method and application of asphalt modifier for roads
  • Preparation method and application of asphalt modifier for roads
  • Preparation method and application of asphalt modifier for roads

Examples

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Embodiment 1

[0017] Mix equal amounts of 1,1-dimethoxymethane and petroleum ether with 60-mesh rubber powder at a mass ratio of 1:20, then add the mixed rubber powder into the open mill, After repeated grinding for 6-8 minutes, the modified rubber powder can be obtained, which is the asphalt modifier for roads.

[0018] Application of asphalt modifier for roads: Add modified rubber powder to the molten asphalt system (modified rubber powder / base asphalt / SBS=3 / 6 / 1) for mixing and stirring, control the processing temperature at about 175°C, and At a speed of 3500rpm / min, mix and stir for 40 minutes to obtain a high-grade road modified asphalt mixture.

[0019] The above are only preferred embodiments of the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present invention shall include Within the protecti...

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Abstract

The invention relates to an asphalt modifier for roads, which is prepared by the following steps: spraying a quantitative chemical assistant onto the surface of rubber powder, and repeatedly rolling by an open mill. The chemical assistant is composed of at least one of 1-diethoxy propane, 1,1-dimethoxymethane, 2,2-dimethoxypropane, isooctane, methyl isopropyl ketone, methyl tetrahydrofuran, petroleum ether and trichloroacetic acid. The weight ratio of the chemical assistant to the rubber powder is (5-20):(80-95). The asphalt modifier has higher compatibility with matrix asphalt, improves the high / low temperature properties, storage stability and aging resistance of the road modified asphalt, comprehensively improves the road usage properties of the asphalt, and thus, can be used for preparing high-grade road modified asphalt.

Description

technical field [0001] The invention relates to a modifier and its application, in particular to an asphalt modifier for roads and its application. Background technique [0002] With the rapid development of my country's highway construction, high-grade highways have higher and higher requirements for modified asphalt materials. Although the use of polymer modified asphalt has become an effective way to improve the performance of asphalt pavement, its price is high and the cost is high; while the use of rubber powder modified road asphalt has abundant raw material rubber powder resources, low price, and simple processing technology. It can improve the elasticity of asphalt, and can improve the high and low temperature performance of asphalt. At the same time, it can not only dispose of a large amount of waste rubber without polluting the environment, but also realize the recycling of waste rubber. Therefore, rubber powder modified asphalt is more and more widely used in roa...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L21/00C08K5/06C08K5/01
Inventor 徐茂震李文志刘金景
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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